to spare (?.)
- de trop
- dispensable
- excess
- expendable
- expletive
- extra
- fresh
- gratuitous
- held back
- held in reserve
- held out
- in abeyance
- in excess
- in hand
- left
- leftover
- mint
- needless
- net
- new
- nonessential
- odd
- original
- outstanding
- over
- pleonastic
- pristine
- prolix
- put aside
- put by
- redundant
- remaining
- remanent
- reserve
- saved
- spare
- stored
- supererogatory
- superfluous
- surplus
- surviving
- suspended
- tautologic
- tautologous
- unapplied
- unbeaten
- uncalled-for
- unconsumed
- unemployed
- unessential
- unexercised
- unexpended
- unhandled
- unnecessary
- unneeded
- unspent
- untapped
- untouched
- untrodden
- unused
- unutilized
- verbose
- waived